如何使用MVC 4 / plupload上传大文件？ [英] How to upload large files using MVC 4 / plupload ?

问题描述

我有它的工作..但我发现当我被上传变得更大（约4000K）控制器就不叫文件。

于是我在分块其中固定资产这一问题增加..但是现在，当我打开该文件，其完整的乱码...

那么什么是上传大文件，plupload / MVC 4的正确方法？

下面是我目前的code

  $（文件）。就绪（函数（）{    VAR上传=新plupload.Uploader（{
        运行时间：HTML5，
        browse_button：pickfiles'，
        容器：容器，
     // MAX_FILE_SIZE：20000mb'，
        网址：'@ Url.Action（上传，家），
        CHUNK_SIZE：4MB，
        //过滤器：
        // {标题：Excel文件，扩展名：XLS，XLSX}，
        // {标题：文本文件，扩展名：TXT}
        //]
        multiple_queues：真实，
        多部分：真实，
        multipart_params：{TASKID：''}
    }）;
 

和所述控制器

  [HttpPost]
    公众的ActionResult上传（INT？大块，字符串名称，字符串TASKID）
    {
        字符串文件路径=;
        变种文件上传= Request.Files [0];
        VAR uploadPath =使用Server.Mappath（〜/ App_Data文件/上传）;
        大块大块=？ 0;
        字符串uploadedFilePath = Path.Combine（uploadPath，名）;
        变种文件名= Path.GetFileName（uploadedFilePath）; 尝试
        {
            使用（VAR FS =新的FileStream（文件路径，块== 0 FileMode.Create：FileMode.Append））
            {
                VAR缓冲=新的字节[fileUpload.InputStream.Length]
                fileUpload.InputStream.Read（缓冲液，0，buffer.Length）;
                fs.Write（缓冲液，0，buffer.Length）;
            }            //登录到DB以备将来处理
            InstanceExpert.AddProcessStart（文件路径，Int32.Parse（TASKID））;
        }
 

解决方案

在web.config中你需要这些（2GB各地）：

 ＆LT;＆的System.Web GT;
    ＆LT;编译调试=真targetFramework =4.5/＆GT;
    ＆LT;的httpRuntime targetFramework =4.5的maxRequestLength =2147483647executionTimeout =1600requestLengthDiskThreshold =2147483647/＆GT;
    ＆LT;安全＆GT;
      ＆LT;＆的requestFiltering GT;
        ＆LT; requestLimits maxAllowedContentLength =2147483647/＆GT;
      ＆LT; /＆的requestFiltering GT;
    ＆LT; /安全＆GT;
    ...
＆LT; /system.web>
 

I had it working.. but I noticed once the files I was uploading get bigger (around 4000k) the controller would not be called..

So I added in chunking which fixed that problem.. but now when I open the file its full of garbage characters...

So what is the correct way to upload large files with plupload/MVC 4 ?

Here is my current code

  $(document).ready(function () {

    var uploader = new plupload.Uploader({
        runtimes: 'html5',
        browse_button: 'pickfiles',
        container: 'container',
     //   max_file_size: '20000mb',
        url: '@Url.Action("Upload", "Home")',
        chunk_size: '4mb',
        //filters: [
        //    { title: "Excel files", extensions: "xls,xlsx" },
        //    { title: "Text files", extensions: "txt" }
        //],
        multiple_queues: true,
        multipart: true,
        multipart_params: { taskId: '' }
    });

and the controller

  [HttpPost]
    public ActionResult Upload(int? chunk, string name, string taskId)
    {
        string filePath = "";
        var fileUpload = Request.Files[0];
        var uploadPath = Server.MapPath("~/App_Data/Uploads");
        chunk = chunk ?? 0;
        string uploadedFilePath = Path.Combine(uploadPath, name);
        var fileName = Path.GetFileName(uploadedFilePath);

 try
        {
            using (var fs = new FileStream(filePath, chunk == 0 ? FileMode.Create : FileMode.Append))
            {
                var buffer = new byte[fileUpload.InputStream.Length];
                fileUpload.InputStream.Read(buffer, 0, buffer.Length);
                fs.Write(buffer, 0, buffer.Length);
            }

            //Log to DB for future processing
            InstanceExpert.AddProcessStart(filePath, Int32.Parse(taskId));
        }

解决方案

In web.config you need these (2GB all around):

<system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" maxRequestLength="2147483647" executionTimeout="1600" requestLengthDiskThreshold="2147483647" />
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="2147483647" />
      </requestFiltering>
    </security>
    ...
</system.web>

这篇关于如何使用MVC 4 / plupload上传大文件？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！